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. 2005 Apr;79(8):4977–4990. doi: 10.1128/JVI.79.8.4977-4990.2005

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Copyright © 2005, American Society for Microbiology

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FIG. 2. — Evolutionary relationships among NV genogroup II strains based upon the entire capsid sequence. An ML tree was drawn using a general time-reversible model of nucleotide substitution and a gamma distribution of among-site variation (with eight rate categories) as well as correction for invariant sites and base composition estimated from the data. Bootstrap values (expressed as percentages of 1,000 replications) are shown. The tree is midpoint rooted for purposes of clarity, and all branch lengths are drawn to scale. (A) Recombinant strains Port Canaveral/301/1994/US, Toronto24/1991/CA, Burwash Landing331/1995/US, and Hillingdon/1990/UK are highlighted and indicated by arrows. NA, not assigned. (B) Recombinant strains Hamburg180/1997/GE and Hamburg137/1997/GE are highlighted and indicated by arrows.

FIG. 2. — Evolutionary relationships among NV genogroup II strains based upon the entire capsid sequence. An ML tree was drawn using a general time-reversible model of nucleotide substitution and a gamma distribution of among-site variation (with eight rate categories) as well as correction for invariant sites and base composition estimated from the data. Bootstrap values (expressed as percentages of 1,000 replications) are shown. The tree is midpoint rooted for purposes of clarity, and all branch lengths are drawn to scale. (A) Recombinant strains Port Canaveral/301/1994/US, Toronto24/1991/CA, Burwash Landing331/1995/US, and Hillingdon/1990/UK are highlighted and indicated by arrows. NA, not assigned. (B) Recombinant strains Hamburg180/1997/GE and Hamburg137/1997/GE are highlighted and indicated by arrows.